/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:09:43,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:09:43,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:09:43,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:09:43,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:09:43,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:09:43,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:09:43,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:09:43,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:09:43,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:09:43,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:09:43,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:09:43,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:09:43,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:09:43,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:09:43,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:09:43,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:09:43,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:09:43,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:09:43,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:09:43,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:09:43,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:09:43,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:09:43,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:09:43,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:09:43,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:09:43,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:09:43,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:09:43,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:09:43,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:09:43,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:09:43,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:09:43,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:09:43,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:09:43,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:09:43,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:09:43,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:09:43,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:09:43,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:09:43,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:09:43,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:09:43,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:09:43,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:09:43,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:09:43,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:09:43,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:09:43,474 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:09:43,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:09:43,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:09:43,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:09:43,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:09:43,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:09:43,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:09:43,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:09:43,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:09:43,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:09:43,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:09:43,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:09:43,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:09:43,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:09:43,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:09:43,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:09:43,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:09:43,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:09:43,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:09:43,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:09:43,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:09:43,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:09:43,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:09:43,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:09:43,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:09:43,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:09:43,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:09:43,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:09:44,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:09:44,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:09:44,004 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:09:44,005 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-24 17:09:44,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f83bdf44/0df193aaf67d4d6db41beee2d3a086b4/FLAG4a827d144 [2020-09-24 17:09:44,765 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:09:44,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-24 17:09:44,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f83bdf44/0df193aaf67d4d6db41beee2d3a086b4/FLAG4a827d144 [2020-09-24 17:09:44,990 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f83bdf44/0df193aaf67d4d6db41beee2d3a086b4 [2020-09-24 17:09:45,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:09:45,014 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:09:45,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:09:45,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:09:45,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:09:45,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:44" (1/1) ... [2020-09-24 17:09:45,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53446a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45, skipping insertion in model container [2020-09-24 17:09:45,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:09:44" (1/1) ... [2020-09-24 17:09:45,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:09:45,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:09:45,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:09:45,679 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:09:45,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:09:45,833 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:09:45,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45 WrapperNode [2020-09-24 17:09:45,834 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:09:45,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:09:45,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:09:45,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:09:45,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... [2020-09-24 17:09:45,951 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:09:45,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:09:45,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:09:45,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:09:45,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:09:46,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:09:46,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:09:46,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 17:09:46,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:09:46,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 17:09:46,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:09:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:09:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:09:46,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:09:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:09:46,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:09:47,395 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:09:47,395 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:09:47,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:47 BoogieIcfgContainer [2020-09-24 17:09:47,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:09:47,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:09:47,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:09:47,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:09:47,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:09:44" (1/3) ... [2020-09-24 17:09:47,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4673d163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:47, skipping insertion in model container [2020-09-24 17:09:47,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:09:45" (2/3) ... [2020-09-24 17:09:47,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4673d163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:09:47, skipping insertion in model container [2020-09-24 17:09:47,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:09:47" (3/3) ... [2020-09-24 17:09:47,415 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-09-24 17:09:47,426 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:09:47,438 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:09:47,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:09:47,497 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:09:47,497 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:09:47,497 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:09:47,497 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:09:47,498 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:09:47,499 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:09:47,499 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:09:47,499 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:09:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 17:09:47,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-24 17:09:47,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:47,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:47,583 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:47,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:47,591 INFO L82 PathProgramCache]: Analyzing trace with hash 149723165, now seen corresponding path program 1 times [2020-09-24 17:09:47,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:47,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466124607] [2020-09-24 17:09:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:48,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:48,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:52,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:56,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:58,354 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:58,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-24 17:09:58,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 17:09:58,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10405 [2020-09-24 17:09:58,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 17:09:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 17:09:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 17:09:58,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:09:58,982 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-09-24 17:09:59,139 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 37 [2020-09-24 17:09:59,260 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2020-09-24 17:09:59,386 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 34 [2020-09-24 17:10:00,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:10:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:00,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:00,365 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:00,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:10:00,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:10:00,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 17:10:00,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:00,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:10:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:10:00,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:10:00,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:00,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:10:00,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [466124607] [2020-09-24 17:10:00,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:10:00,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-09-24 17:10:00,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975546249] [2020-09-24 17:10:00,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 17:10:00,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:10:00,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 17:10:00,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=339, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:10:00,605 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 24 states. [2020-09-24 17:10:00,855 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-09-24 17:10:01,152 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-09-24 17:10:01,289 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-24 17:10:01,620 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-24 17:10:01,985 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-09-24 17:10:02,263 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 17:10:02,483 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 17:10:03,177 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 17:10:03,513 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 17:10:03,937 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 17:10:04,251 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 17:10:04,801 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 17:10:05,255 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-24 17:10:05,468 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 17:10:05,990 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 17:10:07,030 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-09-24 17:10:07,607 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-09-24 17:10:07,928 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 17:10:08,105 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 17:10:08,575 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 17:10:08,798 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 17:10:09,091 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 17:10:09,376 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 17:10:09,718 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 17:10:10,138 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 17:10:10,314 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-09-24 17:10:10,664 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-24 17:10:11,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:10:11,628 INFO L93 Difference]: Finished difference Result 1690 states and 2458 transitions. [2020-09-24 17:10:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-24 17:10:11,630 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 137 [2020-09-24 17:10:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:10:11,663 INFO L225 Difference]: With dead ends: 1690 [2020-09-24 17:10:11,663 INFO L226 Difference]: Without dead ends: 1062 [2020-09-24 17:10:11,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1263, Invalid=2769, Unknown=0, NotChecked=0, Total=4032 [2020-09-24 17:10:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2020-09-24 17:10:11,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 978. [2020-09-24 17:10:11,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-24 17:10:11,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1141 transitions. [2020-09-24 17:10:11,815 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1141 transitions. Word has length 137 [2020-09-24 17:10:11,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:10:11,816 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1141 transitions. [2020-09-24 17:10:11,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 17:10:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1141 transitions. [2020-09-24 17:10:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-24 17:10:11,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:10:11,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:10:11,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:10:11,830 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:10:11,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:10:11,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1547484832, now seen corresponding path program 1 times [2020-09-24 17:10:11,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:10:11,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660347948] [2020-09-24 17:10:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:10:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:12,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:15,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:15,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:23,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:23,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-24 17:10:23,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 17:10:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11369 [2020-09-24 17:10:23,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:10:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 17:10:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 17:10:23,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:10:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:23,389 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:23,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:10:23,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:10:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:10:23,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:10:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:10:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:10:23,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 17:10:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:23,435 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:23,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:10:23,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:10:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:10:23,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:10:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:10:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:10:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:10:23,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660347948] [2020-09-24 17:10:23,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:10:23,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 17:10:23,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642955985] [2020-09-24 17:10:23,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:10:23,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:10:23,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:10:23,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:10:23,471 INFO L87 Difference]: Start difference. First operand 978 states and 1141 transitions. Second operand 5 states. [2020-09-24 17:10:25,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:10:25,466 INFO L93 Difference]: Finished difference Result 2270 states and 2731 transitions. [2020-09-24 17:10:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:10:25,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-24 17:10:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:10:25,481 INFO L225 Difference]: With dead ends: 2270 [2020-09-24 17:10:25,481 INFO L226 Difference]: Without dead ends: 1316 [2020-09-24 17:10:25,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:10:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2020-09-24 17:10:25,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1264. [2020-09-24 17:10:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1264 states. [2020-09-24 17:10:25,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1503 transitions. [2020-09-24 17:10:25,575 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1503 transitions. Word has length 154 [2020-09-24 17:10:25,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:10:25,578 INFO L479 AbstractCegarLoop]: Abstraction has 1264 states and 1503 transitions. [2020-09-24 17:10:25,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:10:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1503 transitions. [2020-09-24 17:10:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-24 17:10:25,589 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:10:25,590 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:10:25,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:10:25,590 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:10:25,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:10:25,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1076336430, now seen corresponding path program 1 times [2020-09-24 17:10:25,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:10:25,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445585640] [2020-09-24 17:10:25,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:10:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:26,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:26,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:27,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:28,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:32,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:32,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:32,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:37,056 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:37,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 17:10:37,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 17:10:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11405 [2020-09-24 17:10:37,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:10:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:10:37,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 17:10:37,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:37,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:10:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:37,698 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:37,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:10:37,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:10:37,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 17:10:37,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:10:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:10:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:10:37,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:37,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 17:10:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:37,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:37,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:37,868 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:37,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:10:37,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:10:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 17:10:37,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:37,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:10:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:10:37,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:10:37,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1